In Democratic primaries this year the overwhelming majority of Muslim Americans voted for a man who has, throughout the campaign, vigorously knocked down rumors that he is a Muslim. But support for Sen. Barack Obama, D-Ill., during the primaries doesn't mean the Democrat has a free pass from the Muslim American community. Last week's incident at an Obama rally in Michigan put some added strain on Obama's support in the Muslim American community. A campaign volunteer reportedly barred two Muslim American women from appearing in camera-range behind Obama's podium after they refused the campaign representative's request to remove their headscarves....